TCT
![corr_tct_stellite_en_b](http://www.kadur.com/wp-content/uploads/2013/03/corr_tct_stellite_en_b1.png)
Carbide (tungsten carbide sintered)
Very suitable for work and semi-hardwoods (especially exotic), chipboards, laminated paper, hard tissue, and all laminates.
STELLITE
![corr_tct_stellite_en_b](http://www.kadur.com/wp-content/uploads/2013/03/corr_tct_stellite_en_b1.png)
Alloy high cobalt content
To work hard and semi-hard wood bit abrasive. Resistance to friction and high temperatures.
HSS 6% W
![corr_hss_st1_en_b](http://www.kadur.com/wp-content/uploads/2013/03/corr_hss_st1_en_b1.png)
Speed steel, alloyed with 6% Tungsten
It is a high performance high speed steel to work semi-hard and soft woods, planers and moulders machines.
ST1
![corr_hss_st1_en_b](http://www.kadur.com/wp-content/uploads/2013/03/corr_hss_st1_en_b1.png)
High speed steel with Chromium Nitride coating
To work all types of wood: hard, semi-hard and soft, planers and moulders machines. Quality highly recommended for being very versatile.